Effective solution mixing method to fabricate highly transparent and optical functional organic — inorganic nanocomposite film / Xiao - Fei Zeng in Industrial & engineering chemistry research, Vol. 50 N° 6 (Mars 2011)  

Public ISBD [article]  inIndustrial & engineering chemistry research > Vol. 50 N° 6 (Mars 2011) . - pp. 3253-3258 Titre : Effective solution mixing method to fabricate highly transparent and optical functional organic — inorganic nanocomposite film Type de document : texte imprimé Auteurs : Xiao - Fei Zeng, Auteur ; Xian - Rong Kong, Auteur ; Jun - Lin Ge, Auteur Année de publication : 2011 Article en page(s) : pp. 3253-3258 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Nanocomposite Mixing Résumé : The organic-inorganic hybrid optical materials with a high transmittance of visible-light have shown great potential applications. However, it is still in challenge to maintain the transparency of optical materials when the inorganic nanoparticles (NPs) are introduced into the polymer matrix because of Rayleigh scattering caused by the severely aggregation of NPs, which is a huge obstacle for its applications. This article reports a transparent "solution" mixing method to fabricate a highly transparent nanocomposite film of zinc oxide (ZnO)/poly (methyl methacrylate)-co-poly (styrene) (PMMA-PS) with the novel UV-shielding properties. The transparent "solution" containing nanoparticles was prepared by phase-transfer of ZnO NPs suspension in hexane to NPs dispersion in toluene with surface modifier. The latter dispersion had the complete transparency as a solution (so-called "solution"). It was found that the incorporation of ZnO NPs not only provided UV-shielding ability to the PMMA-PS nanocomposite film with the same transparency of the pure PMMA-PS film, but also improved the thermal stability of the film. When 2% of the ZnO NPs were added into the PMMA-PS polymer, the nanocomposite film could block UV radiation at 350 nm up to 97% and allow 98% transmittance ofvisible light at 400 nm. The SEM and TEM studies further confirmed that the ZnO NPs were well distributed in the PMMA-PS polymer matrix with the maximum aggregated nanoparticle size less than 20 nm in diameter. High thermal stability was achieved with a 37 °C increase in the initial decomposition temperature of such nanocomposite compared to the pure PMMA-PS. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=23944491 [article] Effective solution mixing method to fabricate highly transparent and optical functional organic — inorganic nanocomposite film [texte imprimé] / Xiao - Fei Zeng, Auteur ; Xian - Rong Kong, Auteur ; Jun - Lin Ge, Auteur . - 2011 . - pp. 3253-3258. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 50 N° 6 (Mars 2011) . - pp. 3253-3258 Mots-clés : Nanocomposite Mixing Résumé : The organic-inorganic hybrid optical materials with a high transmittance of visible-light have shown great potential applications. However, it is still in challenge to maintain the transparency of optical materials when the inorganic nanoparticles (NPs) are introduced into the polymer matrix because of Rayleigh scattering caused by the severely aggregation of NPs, which is a huge obstacle for its applications. This article reports a transparent "solution" mixing method to fabricate a highly transparent nanocomposite film of zinc oxide (ZnO)/poly (methyl methacrylate)-co-poly (styrene) (PMMA-PS) with the novel UV-shielding properties. The transparent "solution" containing nanoparticles was prepared by phase-transfer of ZnO NPs suspension in hexane to NPs dispersion in toluene with surface modifier. The latter dispersion had the complete transparency as a solution (so-called "solution"). It was found that the incorporation of ZnO NPs not only provided UV-shielding ability to the PMMA-PS nanocomposite film with the same transparency of the pure PMMA-PS film, but also improved the thermal stability of the film. When 2% of the ZnO NPs were added into the PMMA-PS polymer, the nanocomposite film could block UV radiation at 350 nm up to 97% and allow 98% transmittance ofvisible light at 400 nm. The SEM and TEM studies further confirmed that the ZnO NPs were well distributed in the PMMA-PS polymer matrix with the maximum aggregated nanoparticle size less than 20 nm in diameter. High thermal stability was achieved with a 37 °C increase in the initial decomposition temperature of such nanocomposite compared to the pure PMMA-PS. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=23944491

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Highly transparent and multifunctional polymer nanohybrid film with superhigh ZnO content synthesized by a bulk polymerization method / Hai-Tao Liu in Industrial & engineering chemistry research, Vol. 51 N° 19 (Mai 2012)  

Public ISBD [article]  inIndustrial & engineering chemistry research > Vol. 51 N° 19 (Mai 2012) . - pp. 6753-6759 Titre : Highly transparent and multifunctional polymer nanohybrid film with superhigh ZnO content synthesized by a bulk polymerization method Type de document : texte imprimé Auteurs : Hai-Tao Liu, Auteur ; Xiao - Fei Zeng, Auteur ; Hong Zhao, Auteur Année de publication : 2012 Article en page(s) : pp. 6753-6759 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Polymerization Résumé : Highly transparent and multifunctional ZnO/poly(n-butyl methacrylate) (ZnO/PBMA) nanohybrid films with superhigh contents of ZnO nanoparticles (NPs) were synthesized by a bulk polymerization method. The structure; morphology; and optical, mechanical, and thermal properties of the obtained nanohybrid films were studied. ZnO NPs were dispersed uniformly and retained their original size (4―6 nm) in the PBMA matrix without any aggregation. The ZnO/PBMA nanohybrid films allowed more than 90% of visible light at 550 nm to pass and maintained almost the same high transparency as pure PBMA film even when the ZnO NP content was as high as 60 wt %. The nanohybrid films embedded with ZnO NPs exhibited significantly enhanced multifunctional performance, including excellent UV-shielding properties, good thermal stability, high surface hardness, and desired flexibility. In particular, the coefficient of thermal expansion (CTE) of the nanohybrid films dearly decreased to 193 from 325 ppm/K for pure PBMA below the glass transition temperature (Tg) and strikingly decreased from 5378 to 1373 ppm/K after the glass transition. The ZnO/polymer nanohybrids synthesized in this work are promising for the fabrication of optical devices with high transparency, such as flexible displays, optical filters, and flexible solar cells. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=25900230 [article] Highly transparent and multifunctional polymer nanohybrid film with superhigh ZnO content synthesized by a bulk polymerization method [texte imprimé] / Hai-Tao Liu, Auteur ; Xiao - Fei Zeng, Auteur ; Hong Zhao, Auteur . - 2012 . - pp. 6753-6759. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 19 (Mai 2012) . - pp. 6753-6759 Mots-clés : Polymerization Résumé : Highly transparent and multifunctional ZnO/poly(n-butyl methacrylate) (ZnO/PBMA) nanohybrid films with superhigh contents of ZnO nanoparticles (NPs) were synthesized by a bulk polymerization method. The structure; morphology; and optical, mechanical, and thermal properties of the obtained nanohybrid films were studied. ZnO NPs were dispersed uniformly and retained their original size (4―6 nm) in the PBMA matrix without any aggregation. The ZnO/PBMA nanohybrid films allowed more than 90% of visible light at 550 nm to pass and maintained almost the same high transparency as pure PBMA film even when the ZnO NP content was as high as 60 wt %. The nanohybrid films embedded with ZnO NPs exhibited significantly enhanced multifunctional performance, including excellent UV-shielding properties, good thermal stability, high surface hardness, and desired flexibility. In particular, the coefficient of thermal expansion (CTE) of the nanohybrid films dearly decreased to 193 from 325 ppm/K for pure PBMA below the glass transition temperature (Tg) and strikingly decreased from 5378 to 1373 ppm/K after the glass transition. The ZnO/polymer nanohybrids synthesized in this work are promising for the fabrication of optical devices with high transparency, such as flexible displays, optical filters, and flexible solar cells. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=25900230

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